If you read the reviews on Excelsiss , you will see these are a great scope , don't believe all you hear , here on IIS , these a awesome for the cash strapped that cant afford a Tak or AP and for $550 it is a good buy .
What colour is the tube ? this will help identifying the brand or even better can you post a photo ? Eg. does it have the adjustable cell like mine pictured here ? , DIAGONAL ? FINDER ? ETC ....
One more thing your EQ6 will hold this easily for visual and if you are interested here is my Saxon 150mm f8 , its fitted with a 'Chromocor' that makes this scope almost an APO , probably as good a ED150 doublet .
Brian.